Missing Problem

[adrnln]

Well So it started the other day it sounded like my Ceffy had dropped a cylinder.

Whats has been checked and seem to be fine

Ignitor pack

Coil Pack (JJR coil packs)

Air flow meter (AFM Z32)

Wiring to the ECU (I have AVC-R and S-AFC)

Wiring to coil packs been tested

She is still missing and looks to be No. 3 but still do not know what it could be or where else to look

Please assist me in what it might be or what else I could check.

R32 and Cefiro computers I have been told are different so swaping them is not an option is this correct??

all help would be great

Cheers

Billy

[dangerous_daveo]

Might sound silly, but two things.

Are all the contacts clean, as in cableing etc.

Also, are there actually springs, or something in the coil pack touching the spark plug?

If not springs from pens are about the right size

[samdumbert]

tried a compression test? might be a burnt valve.

[adrnln]

tried a compression test? might be a burnt valve.

If Burnt valve does this = new engine of such

[nissanmagic]

you can replace burnt valves by taking the head off.

you dont need to replace the whole engine

[toffy]

you can swap between r32/a31 ecu . check your injector plugs? . can you describe the miss ( i.e all through the rev range / only at ile or under 2k / drops in and out )

[adrnln]

Miss is all through the rev range no limit, can still drive the car just sound like its running on 5 cylinders and no real power.

have been going over car on weekend and Compression 150 across the board.

Definatly No. 3 thats missing

Can get power to ignitor but looks to be no signal as such

It has been suggested that the coolant chamber is leaking into that cylinder causing it not to fire but have not pressure tested yet for leaks.

FARK I hate electrical issues ( that is if it is an electrical issue) still hate them though

[toffy]

and they tested your injector? , and there is current to the coilpack?

[adrnln]

Injectors and coil packs are getting power.

Will have to take injectors out to fully test them but they are getting power

Ran car checking things yesterday and car was back against shed wall.

Wall was covered in black soot but it was wet soot and didn't smell of fuel so at the moment we are leaning to that fact that the coolant chamber is leaking into cylinder but will find out more on Thursday.

[daisu]

If you had a coolant leak, wouldn't that have shown up in the compression test?

Have you pulled the spark plugs out and connected them to the coilpacks to make sure that they are all sparking?

[nissanmagic]

pull the plugs out and crank it over to see if any coolant comes out. if ok id check the plugs for tracking or cracked ceramic

but disconnect the injectors and coils first so it doesnt start

[adrnln]

Have pulled more hair then I want to so off to my mate at his workshop she goes. and I hope a fixing she will go I ho, I ho